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Pensions - Summary of Components of Net Periodic Pension Expense (Benefit) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
U.S. Benefit Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0.0 $ 0.0
Interest cost 1.1 1.2
Amortization of actuarial loss 0.5 1.0
Expected return on plan assets (1.7) (2.4)
Net periodic pension benefit (0.1) (0.2)
Non-U.S. Benefit Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0.0 0.1
Interest cost 0.2 0.2
Amortization of actuarial loss 0.2 0.2
Expected return on plan assets (0.5) (0.5)
Net periodic pension benefit $ (0.1) $ 0.0